Hi I have data from an experiment that used a repeated-measures factorial 2x2 design (i.e. each participant contributed data to both levels of both factors). I need a non-parametric version of the repeated-measures factorial ANOVA to analyse the data. SPSS only has non-parametric tests for one-way ANOVAs but I have been told that the test I need can be implemented using the R software. Unfortunantly I haven't been able to work out how to do this test in R. I've got the Wilcox book 'Robust Estimation and Hypothesis testing' but to be honest I don't have enough of a background in stats to understand a great deal of it, and I wasn't able to work out how to do the test I want. Can anyone let me know how I can do such a test in R? I presume this is a test that people frequently need to use and that there will be some code already written that can implement the test. Thanks Rob -- View this message in context: http://r.789695.n4.nabble.com/Non-parametric-repeated-measures-factorial-ANOVA-tp4118816p4118816.html Sent from the R help mailing list archive at Nabble.com.
Non parametric, repeated-measures, factorial ANOVA
3 messages · Jim Lemon, RobH2011
On 11/29/2011 10:31 PM, RobH2011 wrote:
Hi I have data from an experiment that used a repeated-measures factorial 2x2 design (i.e. each participant contributed data to both levels of both factors). I need a non-parametric version of the repeated-measures factorial ANOVA to analyse the data. SPSS only has non-parametric tests for one-way ANOVAs but I have been told that the test I need can be implemented using the R software. Unfortunantly I haven't been able to work out how to do this test in R. I've got the Wilcox book 'Robust Estimation and Hypothesis testing' but to be honest I don't have enough of a background in stats to understand a great deal of it, and I wasn't able to work out how to do the test I want. Can anyone let me know how I can do such a test in R? I presume this is a test that people frequently need to use and that there will be some code already written that can implement the test.
Hi Rob, The nparLD package, based on the work of Professor Brunner, might do what you want. Jim
Hi Thanks for your reply. The package appears to be for the analysis of longitudinal designs, and requires a time factor to be input on the relevant . My experiment is just a standard repeated-measures design, and I just need a direct, non-parametricc equivalent of the Factorial repeated-measures ANOVA. It occurs to me that the terminology I am using might be a problem - when I say repeated measures I mean that it is a within subjects design, so that each subject does each condition, counterbalanced so that order/time effects are not an issue. Thanks Rob -- View this message in context: http://r.789695.n4.nabble.com/Non-parametric-repeated-measures-factorial-ANOVA-tp4118816p4122501.html Sent from the R help mailing list archive at Nabble.com.